What’s happened to the more than 2,000 families who were separated after crossing the U.S. border unlawfully in 2018? And how did immigration policy in America reach this point? In this special FRONTLINE report, acclaimed producer Marcela Gaviria and correspondent Martin Smith examine immigration policy under both Trump and Obama, investigate the origins of “zero tolerance” — and reveal the journeys and voices of children who were separated from their parents.
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